Added test to detect if items/blocks are animated and crops single frame from image if animated.

convert-mc-resource-pack.py

@@ -1,6 +1,7 @@
 #!/usr/bin/python3
 
 import shutil, zipfile, sys, getopt, os, json, platform, csv, posixpath, subprocess
+from PIL import Image
 
 pack_format=1
 TEXTURE_SIZE = 64
@@ -58,6 +59,18 @@ def log(msg):
     if debug:
         logFile.write(msg + "\n")
 
+# This function is called to check if an image is animated. Returns True if it is animated, false if it is a static image
+def is_animated(imagePath):
+    global TEXTURE_SIZE
+    im = Image.open(imagePath)
+    width, height = im.size
+    if width == height:
+        return False
+    elif height % width == 0: # Height is an even factor of width, so it's probably animated frames of an item/block, so make sure we crop it.
+        return True
+    else: # Height is not an even factor of the width, so it probably isn't animated and is a mob texture
+        return False
+	
 def crop_image(xs,ys,xl,yl,xt,yt,src,dst):
     global magick_prefix, CONVERT, COMPOSITE, MOGRIFY, DISPLAY, ANIMATE, COMPARE, CONJURE, IDENTIFY, IMPORT, MONTAGE, STREAM
     if magick_version == 7:
@@ -244,7 +257,7 @@ def clean_up():
     #shutil.rmtree(input_directory)
 
 def crop_and_copy():
-    global input_directory, pack_format, output_directory, generating_for_game
+    global input_directory, pack_format, output_directory, generating_for_game, TEXTURE_SIZE
     with open(os.path.join("pack_formats", str(pack_format) + ".csv")) as formatCSV:
         readCSV = csv.reader(formatCSV, delimiter=',')
         for source_path, source_file, target_path, target_file, xs, ys, xl, yl, xt, yt, blacklisted in readCSV:
@@ -264,7 +277,12 @@ def crop_and_copy():
                 continue
             if xs == "":
                 #Don't have to crop, just copy and rename
-                shutil.copyfile(source, destination)
+                #Ensure that item/block is not animated, if it is animated, crop it.
+                if is_animated(source):
+                    warn("Source file " + source_file + " seems to be animated, cropping a single tile...")
+                    crop_image(0,0,TEXTURE_SIZE,TEXTURE_SIZE,0,0,source,destination)    
+                else:
+                    shutil.copyfile(source, destination)
             else:
                 #Use Image Magick to crop and then rename
                 log("Cropping source file " + source_file)